The IESG has received a request from the IP Performance Metrics WG (ippm) to consider the following document: - 'Model Based Metrics for Bulk Transport Capacity' <draft-ietf-ippm-model-based-metrics-10.txt> as Experimental RFC The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2017-03-14. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract We introduce a new class of Model Based Metrics designed to assess if a complete Internet path can be expected to meet a predefined Target Transport Performance by applying a suite of IP diagnostic tests to successive subpaths. The subpath-at-a-time tests can be robustly applied to critical infrastructure, such as network interconnections or even individual devices, to accurately detect if any part of the infrastructure will prevent paths traversing it from meeting the Target Transport Performance. Model Based Metrics rely on peer-reviewed mathematical models to specify a Targeted Suite of IP Diagnostic tests, designed to assess whether common transport protocols can be expected to meet a predetermined Target Transport Performance over an Internet path. For Bulk Transport Capacity, the IP diagnostics are built on test streams that mimic TCP over the complete path and statistical criteria for evaluating the packet transfer statistics of those streams. The temporal structure of the test stream (bursts, etc) mimic TCP or other transport protocol carrying bulk data over a long path. However they are constructed to be independent of the details of the subpath under test, end systems or applications. Likewise the success criteria evaluates the packet transfer statistics of the subpath against criteria determined by protocol performance models applied to the Target Transport Performance of the complete path. The success criteria also does not depend on the details of the subpath, end systems or application. Model Based Metrics exhibit several important new properties not present in other Bulk Transport Capacity Metrics, including the ability to reason about concatenated or overlapping subpaths. The results are vantage independent which is critical for supporting independent validation of tests by comparing results from multiple measurement points. This document does not define the IP diagnostic tests, but provides a framework for designing suites of IP diagnostic tests that are tailored to confirming that infrastructure can meet the predetermined Target Transport Performance. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-ippm-model-based-metrics/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-ippm-model-based-metrics/ballot/ No IPR declarations have been submitted directly on this I-D.
